CVE-2024-38989
📋 TL;DR
CVE-2024-38989 is a prototype pollution vulnerability in izatop bunt's qs.js component that allows attackers to inject arbitrary properties into object prototypes. This can lead to remote code execution or denial of service by manipulating application behavior. Any system running vulnerable versions of izatop bunt is affected.
💻 Affected Systems
- izatop bunt
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, allowing attackers to execute arbitrary commands, steal data, or deploy ransomware.
Likely Case
Denial of service through application crashes or instability, potentially leading to service disruption and data corruption.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially only causing application errors without system compromise.
🎯 Exploit Status
Proof of concept available in GitHub gist, exploitation requires sending specially crafted input to vulnerable endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.29.20 or later
Vendor Advisory: https://github.com/izatop/bunt/commit/c55201a8cee03e5282f99874dead988c80d31db7
Restart Required: Yes
Instructions:
1. Update izatop bunt to version 0.29.20 or later using npm update izatop-bunt. 2. Restart all affected applications. 3. Verify the update was successful.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict input validation and sanitization for all user inputs before processing with qs.js
Use safe parsing options
allConfigure qs.js with safe parsing options that prevent prototype pollution
const qs = require('qs'); const parsed = qs.parse(input, { allowPrototypes: false });
🧯 If You Can't Patch
- Implement WAF rules to block requests containing suspicious prototype pollution patterns
- Isolate affected systems in network segments with strict access controls
🔍 How to Verify
Check if Vulnerable:
Check package.json for izatop bunt version <=0.29.19 or examine node_modules/izatop-bunt/package.jsonCheck Version:
npm list izatop-buntVerify Fix Applied:
Verify izatop bunt version is >=0.29.20 and test with known exploit payloads📡 Detection & Monitoring
Log Indicators:
- Unusual error messages related to qs.js parsing
- Application crashes or restarts
- Suspicious property assignments in logs
Network Indicators:
- HTTP requests with specially crafted query strings containing __proto__ or constructor properties
SIEM Query:
source="*app.log*" AND ("qs.js" OR "prototype" OR "__proto__") AND (error OR crash)